A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5990-00-803-0490
NSN 6685-01-247-7211
NSN 6645-01-494-3845
NSN 5965-01-648-2590
NSN 5945-01-493-2985
NSN 6610-01-347-6781
NSN 5910-01-607-7724
NSN 5965-00-436-2226
NSN 6220-01-199-7241
NSN 6220-00-577-3434
NSN 5965-01-432-3946
NSN 6130-01-593-2488